Over the years, considerable research has been conducted into our sense of smell. These studies argue that the sense of smell is the most powerful sense due to its link with our state of mind. As humans, we prefer to use our sense of smell and hearing over smell. We “see” the world largely through eyes and ears, often suppressing our awareness of what our nose has to tell us. Many of us have been taught that there is something shameful about odors.

In order to understand the foundation for this argument, it is necessary to consider the results of a number of different studies done on olfactory function as it relates to our mental state. This paper will include studies done on the sense of smell and its link to depression, schizophrenia, and memory. By evaluating these studies and their results, it will be possible to recognize the premise of this argument.

Before exploring these studies, one must first know how the olfactory system works. How we smell is a very complex process involving a part of our nose and various parts of our brain. We have the ability to recognize up to 10,000 separate odors but each thing we smell must be

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